CN110589699B - Combined pulley block for conversion of movable pulley and fixed pulley - Google Patents
Combined pulley block for conversion of movable pulley and fixed pulley Download PDFInfo
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- CN110589699B CN110589699B CN201910932728.0A CN201910932728A CN110589699B CN 110589699 B CN110589699 B CN 110589699B CN 201910932728 A CN201910932728 A CN 201910932728A CN 110589699 B CN110589699 B CN 110589699B
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- pulley
- locking
- fixed
- component
- support
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/14—Power transmissions between power sources and drums or barrels
- B66D1/20—Chain, belt, or friction drives, e.g. incorporating sheaves of fixed or variable ratio
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
- B66D3/10—Applications of braking or detent devices
Abstract
The invention relates to the field of pulley blocks, in particular to a combined pulley block for converting a movable pulley and a fixed pulley, which comprises a fixed component, a fixed pulley component, a movable pulley component, a conversion locking mechanism, an anti-stall mechanism, a hanger and a speed measurement sensor, wherein the fixed pulley component is fixedly arranged at the bottom of the fixed component, the movable pulley component is arranged below the fixed pulley component, the movable pulley component and the fixed pulley component are detachably arranged through the conversion locking mechanism, the movable pulley component and the fixed pulley component are fixedly arranged to form the fixed pulley mechanism, and the anti-stall mechanism is arranged on the fixed pulley component. Safety accidents and loss caused by stall are avoided, and the control precision of the stall-preventing mechanism is improved due to the self-locking performance of the worm and gear.
Description
Technical Field
The invention relates to the field of pulley blocks, in particular to a combined pulley block for converting a movable pulley and a fixed pulley.
Background
The pulley block is a simple machine assembled by a plurality of movable pulleys and fixed pulleys, and can save labor and change the force application direction. The labor saving of the pulley block is determined by the number of rope strands, the mechanical efficiency is determined by the gravity of a pulled object, the gravity of a movable pulley, friction and the like, and the pulley is a small wheel which is provided with a groove at the periphery and can rotate around a shaft. A simple machine consisting of a grooved disc rotatable about a central axis and a flexible cable (rope, tape, cable, chain, etc.) running over the disc, which can rotate about the central axis, is called a pulley.
When a heavier machine is hoisted, the purpose of hoisting is achieved by using a plurality of pulley blocks in a matched mode, when the pulley blocks break down, the sliding speed of a rope on the pulley blocks is too high, even high-altitude falling occurs, objects are damaged and lost, and the problem of great potential safety hazards exists when the pulley blocks are used.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a combined pulley block for converting a movable pulley and a fixed pulley.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a combination formula assembly pulley of moving, fixed pulley conversion, includes fixed subassembly, fixed pulley assembly, moves loose pulley assembly, conversion locking mechanical system, anti-stall mechanism, hanger and tachometer sensor, fixed subassembly's bottom fixed mounting has fixed pulley assembly, move loose pulley assembly is installed to fixed pulley assembly's below, just move loose pulley assembly and fixed pulley assembly between through conversion locking mechanical system demountable installation, it forms fixed pulley mechanism with fixed pulley assembly fixed mounting to move loose pulley assembly, the last anti-stall mechanism of installing of fixed pulley assembly, the bottom fixed mounting who moves loose pulley assembly has the hanger, move the last tachometer sensor that installs of loose pulley assembly.
Specifically, fixed subassembly includes mount, jib, first screw and hex bolts, jib fixed mounting is passed through at the top of mount, first screw has all been seted up to the relative both sides of mount, the hex bolts is installed in the first screw.
Specifically, fixed pulley assembly includes first support, first pivot, first pulley and second screw, rotate through first pivot on the first support and install a plurality of first pulleys, just the second screw corresponding with first screw on the mount has all been seted up to the relative both sides in first support upper end, can dismantle fixed mounting through the hex bolts between first support and the mount, install anti-stall mechanism on the first support at first pulley top.
Specifically, the movable pulley assembly comprises a second support, a second rotating shaft and a second pulley, the second support is rotatably provided with a plurality of second pulleys through the second rotating shaft, and a speed measuring sensor is fixedly arranged on the second support below the second pulleys.
Specifically, the conversion locking mechanism comprises a first mounting plate, a locking plate, a clamping groove, a second mounting plate, a connecting plate, a third rotating shaft, a locking buckle, a locking hanging groove, a threaded hole and a limiting screw rod, wherein the first mounting plate is fixedly mounted on two opposite sides of the lower end of the first bracket, the locking plate is mounted on the first mounting plate and is arranged in an L-shaped structure, the clamping groove is formed between the locking plate and the first mounting plate, the second mounting plate is fixedly mounted on two opposite sides of the second bracket, the connecting plate is mounted on the second mounting plate, the locking buckle is rotatably mounted on the connecting plate through the third rotating shaft, one end of the locking buckle, far away from the third rotating shaft, is arranged in a V-shaped structure, the locking hanging groove is formed in the locking plate, the locking buckle is buckled on the locking hanging groove, and the threaded hole is formed in two opposite sides of the upper end of the locking hanging groove, and a limiting screw is arranged in the threaded hole and is positioned above the locking buckle.
Concretely, anti-stall mechanism includes one-level curb plate, dwang, connecting block, stripper plate and actuating mechanism, fixed mounting has one-level curb plate on the first support at first pulley top, one-level curb plate is provided with two, two one-level curb plate symmetry sets up the relative both sides in pulley groove on first pulley, and two rotate between the one-level curb plate and install the dwang, the dwang passes through connecting block fixed mounting and has the stripper plate, set up with the pulley groove contact of first pulley when the stripper plate sets up perpendicularly, actuating mechanism is installed to the one end of dwang.
Specifically, actuating mechanism includes turbine, worm, second grade curb plate and motor, one side and the dwang fixed mounting of turbine, the worm is installed in one side meshing of turbine, two second grade curb plates of one side fixed mounting of one-level curb plate, the both ends that the worm is relative are rotated and are installed on two second grade curb plates, just the output transmission of shaft coupling and motor is passed through to the one end of worm is connected, motor fixed mounting is on the one-level curb plate.
Specifically, the fixed pulley assembly and the movable pulley assembly are provided with positioning mechanisms, each positioning mechanism comprises a positioning block and a positioning groove, the positioning blocks are fixedly installed at the bottom of the first support, the positioning grooves are fixedly installed at the top of the second support, and the positioning blocks are inserted into the positioning grooves.
The invention has the beneficial effects that:
(1) the combined pulley block with the conversion of the movable pulley and the fixed pulley comprises a fixed component and a conversion locking mechanism arranged on the fixed pulley component and the movable pulley component, wherein the fixed pulley component and the fixed component are disassembled, and the disassembled fixed pulley component and the movable pulley component are assembled to form a new fixed pulley mechanism, so that the movable pulley and the fixed pulley of the pulley block are converted for use, a locking buckle rotatably arranged on the conversion locking mechanism through a third rotating shaft rotates to be clamped in a locking hanging groove of a locking plate, and a limiting screw is used for limiting and fixing the locking buckle in the locking hanging groove to prevent locking from falling off.
(2) According to the combined pulley block with the conversion between the movable pulley and the fixed pulley, the anti-stall mechanism is arranged on the fixed pulley assembly, the driving mechanism is matched with the anti-stall mechanism for use, the driving mechanism drives the rotating rod on the first-stage side plate to rotate to drive the connecting block on the rotating rod and the extrusion plate to rotate, the extrusion plate rotates to be close to the pulley groove to extrude a rope in the pulley groove, and when the extrusion plate rotates in a vertical state in the pulley groove, the rope between the extrusion plate and the pulley groove is extruded and locked, so that the anti-stall purpose is achieved, and safety accidents and losses caused by stall are avoided.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of a combined pulley block for conversion between a movable pulley and a fixed pulley provided by the invention;
fig. 2 is a schematic structural diagram of a conversion locking mechanism of a combined pulley block for converting a movable pulley and a fixed pulley provided by the invention;
FIG. 3 is a schematic structural diagram of a locking plate of a combined pulley block with a movable pulley and a fixed pulley converted provided by the invention;
fig. 4 is a schematic structural diagram of a movable pulley assembly of a combined pulley block with a movable pulley and a fixed pulley converted according to the present invention;
fig. 5 is a schematic structural diagram of a fixed pulley assembly of a combined pulley block with a movable pulley and a fixed pulley converted according to the present invention;
FIG. 6 is a schematic structural diagram of a stall prevention mechanism of a combined pulley block with movable and fixed pulley conversion provided by the invention;
fig. 7 is a schematic structural diagram of a driving mechanism of a combined pulley block for converting a movable pulley and a fixed pulley provided by the invention.
In the figure: 1. a fixing assembly; 11. a fixed mount; 12. a boom; 13. a first screw hole; 14. a hexagon bolt; 2. a fixed pulley assembly; 21. a first bracket; 22. a first rotating shaft; 23. a first pulley; 24. a second screw hole; 25. positioning blocks; 3. a movable pulley assembly; 31. a second bracket; 32. a second rotating shaft; 33. a second pulley; 34. positioning a groove; 4. a conversion locking mechanism; 41. a first mounting plate; 42. a locking plate; 43. a card slot; 44. a second mounting plate; 45. a connecting plate; 46. a third rotating shaft; 47. locking the buckle; 48. locking the hanging groove; 49. a threaded hole; 410. a limit screw; 5. an anti-stall mechanism; 51. a first-stage side plate; 52. rotating the rod; 53. connecting blocks; 54. a pressing plate; 55. a drive mechanism; 551. a turbine; 552. a worm; 553. a secondary side plate; 554. a motor; 6. a hanger; 7. a speed measuring sensor.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-7, the combined pulley block with movable pulley and fixed pulley conversion according to the present invention includes a fixed component 1, a fixed pulley component 2, a movable pulley component 3, a conversion locking mechanism 4, an anti-stall mechanism 5, a hanger 6 and a speed measurement sensor 7, wherein the fixed pulley component 2 is fixedly installed at the bottom of the fixed component 1, the movable pulley component 3 is installed below the fixed pulley component 2, the movable pulley component 3 and the fixed pulley component 2 are detachably installed through the conversion locking mechanism 4, the movable pulley component 3 and the fixed pulley component 2 are fixedly installed to form the fixed pulley mechanism, the anti-stall mechanism 5 is installed on the fixed pulley component 2, the hanger 6 is fixedly installed at the bottom of the movable pulley component 3, and the speed measurement sensor 7 is installed on the movable pulley component 3.
Specifically, fixed subassembly 1 includes mount 11, jib 12, first screw 13 and hex bolts 14, 12 fixed mounting are passed through at the top of mount 11 to the jib, first screw 13 has all been seted up to the relative both sides of mount 11, hex bolts 14 are installed to first screw 13.
Specifically, fixed pulley assembly 2 includes first support 21, first pivot 22, first pulley 23 and second screw 24, rotate through first pivot 22 on the first support 21 and install a plurality of first pulleys 23, just the second screw 24 corresponding with first screw 13 on the mount 11 has all been seted up to the relative both sides in first support 21 upper end, can dismantle fixed mounting through hex bolts 14 between first support 21 and the mount 11, install stall-preventing mechanism 5 on the first support 21 at first pulley 23 top.
Specifically, the movable pulley assembly 3 includes a second support 31, a second rotating shaft 32 and a second pulley 33, a plurality of second pulleys 33 are rotatably installed on the second support 31 through the second rotating shaft 32, and a speed measuring sensor 7 is fixedly installed on the second support 31 below the second pulley 33.
Specifically, conversion locking mechanical system 4 includes first mounting panel 41, locking plate 42, draw-in groove 43, second mounting panel 44, connecting plate 45, third pivot 46, locking buckle 47, locking hanging groove 48, screw hole 49 and stop screw 410, equal fixed mounting has first mounting panel 41 on the relative both sides of first support 21 lower extreme, install locking plate 42 on the first mounting panel 41, locking plate 42 is the setting of L type structure, be formed with draw-in groove 43 between locking plate 42 and the first mounting panel 41, equal fixed mounting has second mounting panel 44 on the relative both sides on the second support 31, install connecting plate 45 on the second mounting panel 44, install locking buckle 47 through third pivot 46 rotation on connecting plate 45, the one end that third pivot 46 was kept away from to locking buckle 47 is the setting of V type structure, locking hanging groove 48 has been seted up on the locking plate 42, locking buckle 47 buckle is on locking hanging groove 48, just threaded hole 49 has all been seted up to the relative both sides in locking hanging groove 48 upper end, threaded hole 49 internal thread installs stop screw 410, stop screw 410 is located locking buckle 47's top, through the fixed subassembly 1 that sets up and the conversion locking mechanical system 4 of installation on fixed pulley assembly 2 and movable pulley assembly 3, fixed subassembly 1 realizes the demountable fixing installation to fixed pulley assembly 2, and conversion locking mechanical system 4 realizes the demountable installation between fixed pulley assembly 2 and the movable pulley assembly 3 for the assembly pulley moves, the fixed pulley conversion uses.
Specifically, the anti-stall mechanism 5 includes one-level side plate 51, a rotating rod 52, a connecting block 53, two extrusion plates 54 and a driving mechanism 55, fixed mounting has one-level side plate 51 on the first support 21 at the top of the first pulley 23, the one-level side plate 51 is provided with two, two the one-level side plate 51 is symmetrically arranged on the two opposite sides of the pulley groove on the first pulley 23, and two the rotating rod 52 is rotatably arranged between the one-level side plates 51, the rotating rod 52 is fixedly mounted with the extrusion plates 54 through the connecting block 53, the extrusion plates 54 are vertically arranged to contact with the pulley groove of the first pulley 23, the driving mechanism 55 is mounted at one end of the rotating rod 52 to extrude the rope in the pulley groove, when the extrusion plates 54 rotate in the pulley groove at a vertical state, the rope between the extrusion plates 54 and the pulley groove is extruded and locked, thereby achieving the anti-stall purpose, safety accidents and loss caused by stall are avoided.
Specifically, the driving mechanism 55 includes a worm wheel 551, a worm 552, two secondary side plates 553 and a motor 554, one side of the worm wheel 551 and the rotating rod 52 are fixedly installed, one side of the worm wheel 551 is engaged with and installed with the worm 552, one side of the primary side plate 51 is fixedly installed with the two secondary side plates 553, two opposite ends of the worm 552 are rotatably installed on the two secondary side plates 553, one end of the worm 552 is in transmission connection with an output end of the motor 554 through a coupling, the motor 554 is fixedly installed on the primary side plate 51, and the self-locking performance of the worm 552 of the worm wheel 551 improves the control accuracy of the driving mechanism 55 and the anti-stall mechanism 5.
Specifically, install positioning mechanism on fixed pulley assembly 2 and the movable pulley assembly 3, positioning mechanism includes locating piece 25 and constant head tank 34, locating piece 25 fixed mounting is in the bottom of first support 21, constant head tank 34 fixed mounting is at the top of second support 31, locating piece 25 inserts in constant head tank 34, and the locating piece 25 of first support 21 inserts in constant head tank 34 of second support 31, realizes the location locking, avoids installing between fixed pulley assembly 2 and the movable pulley assembly 3 to rock, and movable, fixed pulley conversion convenient operation, and stability are good.
When in use, the fixed component 1 and the fixed pulley component 2 are installed, the fixed pulley component 2 and the movable pulley component 3 are fixedly installed through the conversion locking mechanism 4, a fixed pulley mechanism is formed among the three components, the fixed component 1 and the fixed pulley component 2 are installed, the fixed pulley component 2 and the movable pulley component 3 are connected through a rope, a movable and fixed combined pulley mechanism is formed among the three components, the fixed component 1 and the fixed pulley component 2 are connected through the rope, the fixed pulley component 2 and the movable pulley component 3 are fixedly installed through the conversion locking mechanism 4, the movable pulley mechanism is formed among the three components, the fixed component 1 realizes the detachable fixed installation of the fixed pulley component 2 through the arranged fixed component 1 and the conversion locking mechanism 4 installed on the fixed pulley component 2 and the movable pulley component 3, the conversion locking mechanism 4 realizes the detachable installation between the fixed pulley component 2 and the movable pulley component 3, the pulley block can be switched between a movable pulley block and a fixed pulley block for use, the fixed frame 11 and the first support 21 are fixedly installed through a first screw hole 13, a second screw hole 24 and a hexagon bolt 14, a locking buckle 47 installed on a connecting plate 45 is rotated through a third rotating shaft 46 on a switching locking mechanism 4, the locking buckle 47 is rotated to be clamped in a locking hanging groove 48 of the locking plate 42, one end of the locking buckle 47 is inserted into a clamping groove 43 between the first installation plate 41 and the locking plate 42, a limiting screw 410 is installed in a threaded hole 49 on the locking hanging groove 48, the locking buckle 47 in the locking hanging groove 48 is limited and fixed by the limiting screw 410 to prevent locking from falling off, a positioning block 25 of the first support 21 is inserted into a positioning groove 34 of the second support 31 to realize positioning and locking, installation and shaking between the fixed pulley assembly 2 and the movable pulley assembly 3 are avoided, and the switching operation of the movable pulley block and the fixed pulley block is, And the stability is good, through the anti-stall mechanism 5 arranged on the fixed pulley assembly 2, when the speed sensor 7 detects that the rope moving speed on the pulley is too fast, the motor 554 on the driving mechanism 55 drives the worm 552 between the two secondary side plates 553 to rotate, the worm 552 rotates to drive the worm wheel 551 engaged with the worm 552 to rotate, the worm wheel 551 rotates to drive the rotating rod 52 coaxially arranged on the primary side plate 51 to rotate, so as to drive the connecting block 53 and the extrusion plate 54 on the rotating rod 52 to rotate through the driving mechanism 55, the extrusion plate 54 rotates to be close to the pulley groove to extrude the rope in the pulley groove, when the extrusion plate 54 rotates in the vertical state in the pulley groove, the rope between the extrusion plate 54 and the pulley groove is extruded and locked, thereby achieving the anti-stall purpose, avoiding the safety accident and loss 551 caused by stall, and the driving mechanism 55 is composed of the worm wheel 552, the self-locking performance of the worm wheel 551 and the anti-stall mechanism 5 are improved, the practicability is stronger.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A combination formula assembly pulley of movable pulley conversion, its characterized in that: the anti-stall device comprises a fixed component (1), a fixed pulley component (2), a movable pulley component (3), a conversion locking mechanism (4), an anti-stall mechanism (5), a hanger (6) and a speed measurement sensor (7), wherein the fixed pulley component (2) is fixedly installed at the bottom of the fixed component (1), the movable pulley component (3) is installed below the fixed pulley component (2), the movable pulley component (3) and the fixed pulley component (2) are detachably installed through the conversion locking mechanism (4), the movable pulley component (3) and the fixed pulley component (2) are fixedly installed to form the fixed pulley mechanism, the anti-stall mechanism (5) is installed on the fixed pulley component (2), the hanger (6) is fixedly installed at the bottom of the movable pulley component (3), and the speed measurement sensor (7) is installed on the movable pulley component (3); the fixing assembly (1) comprises a fixing frame (11), a hanging rod (12), first screw holes (13) and hexagon bolts (14), the top of the fixing frame (11) is fixedly installed through the hanging rod (12), the first screw holes (13) are formed in two opposite sides of the fixing frame (11), and the hexagon bolts (14) are installed in the first screw holes (13); the fixed pulley assembly (2) comprises a first support (21), a first rotating shaft (22), a plurality of first pulleys (23) and second screw holes (24), wherein the first support (21) is rotatably provided with the first pulleys (23) through the first rotating shaft (22), two opposite sides of the upper end of the first support (21) are respectively provided with the second screw holes (24) corresponding to the first screw holes (13) on the fixing frame (11), the first support (21) and the fixing frame (11) are detachably and fixedly installed through hexagonal bolts (14), and the first support (21) at the top of the first pulleys (23) is provided with an anti-stall mechanism (5); the movable pulley component (3) comprises a second support (31), a second rotating shaft (32) and second pulleys (33), the second support (31) is rotatably provided with a plurality of second pulleys (33) through the second rotating shaft (32), and the second support (31) below the second pulleys (33) is fixedly provided with a speed measuring sensor (7); the conversion locking mechanism (4) comprises a first mounting plate (41), a locking plate (42), a clamping groove (43), a second mounting plate (44), a connecting plate (45), a third rotating shaft (46), a locking buckle (47), a locking hanging groove (48), a threaded hole (49) and a limiting screw (410), wherein the first mounting plate (41) is fixedly mounted on two opposite sides of the lower end of the first support (21), the locking plate (42) is mounted on the first mounting plate (41), the locking plate (42) is arranged in an L-shaped structure, the clamping groove (43) is formed between the locking plate (42) and the first mounting plate (41), the second mounting plate (44) is fixedly mounted on two opposite sides of the second support (31), the connecting plate (45) is mounted on the second mounting plate (44), and the locking buckle (47) is rotatably mounted on the connecting plate (45) through the third rotating shaft (46), one end, far away from the third rotating shaft (46), of the locking buckle (47) is arranged in a V-shaped structure, a locking hanging groove (48) is formed in the locking plate (42), the locking buckle (47) is buckled on the locking hanging groove (48), threaded holes (49) are formed in two opposite sides of the upper end of the locking hanging groove (48), a limiting screw rod (410) is installed in each threaded hole (49), and the limiting screw rod (410) is located above the locking buckle (47); the anti-stall mechanism (5) comprises first-stage side plates (51), rotating rods (52), connecting blocks (53), extrusion plates (54) and driving mechanisms (55), wherein the first-stage side plates (51) are fixedly mounted on a first support (21) at the top of the first pulley (23), the first-stage side plates (51) are provided with two, the two first-stage side plates (51) are symmetrically arranged on two opposite sides of an upper pulley groove of the first pulley (23), the rotating rods (52) are rotatably mounted between the two first-stage side plates (51), the extrusion plates (54) are fixedly mounted on the rotating rods (52) through the connecting blocks (53), the extrusion plates (54) are arranged in contact with the pulley grooves of the first pulley (23) when being vertically arranged, and the driving mechanisms (55) are mounted at one end of the rotating rods (52); positioning mechanisms are mounted on the fixed pulley assembly (2) and the movable pulley assembly (3) and comprise positioning blocks (25) and positioning grooves (34), the positioning blocks (25) are fixedly mounted at the bottom of the first support (21), the positioning grooves (34) are fixedly mounted at the top of the second support (31), and the positioning blocks (25) are inserted into the positioning grooves (34).
2. The combined pulley block for conversion of the movable pulley and the fixed pulley as claimed in claim 1, wherein: the driving mechanism (55) comprises a turbine (551), a worm (552), two-stage side plates (553) and a motor (554), one side of the turbine (551) is fixedly installed with the rotating rod (52), the worm (552) is installed on one side of the turbine (551) in a meshed mode, two second-stage side plates (553) are fixedly installed on one side of the first-stage side plate (51), two opposite ends of the worm (552) are rotatably installed on the two second-stage side plates (553), one end of the worm (552) is in transmission connection with an output end of the motor (554) through a coupler, and the motor (554) is fixedly installed on the first-stage side plate (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910932728.0A CN110589699B (en) | 2019-09-29 | 2019-09-29 | Combined pulley block for conversion of movable pulley and fixed pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910932728.0A CN110589699B (en) | 2019-09-29 | 2019-09-29 | Combined pulley block for conversion of movable pulley and fixed pulley |
Publications (2)
| Publication Number | Publication Date |
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| CN110589699A CN110589699A (en) | 2019-12-20 |
| CN110589699B true CN110589699B (en) | 2021-01-05 |
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| CN201910932728.0A Active CN110589699B (en) | 2019-09-29 | 2019-09-29 | Combined pulley block for conversion of movable pulley and fixed pulley |
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| CN112794227B (en) * | 2021-01-19 | 2022-09-09 | 辽宁通达建材实业有限公司 | Pulley type massage bed steel wire rope |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB905565A (en) * | 1960-10-06 | 1962-09-12 | Morgan Engineering Co | Multiple hoist apparatus |
| FR2333743A1 (en) * | 1975-12-01 | 1977-07-01 | Pingon Manubat Sa | Multi sheave trolley for travelling crane - has automatic transposition of weight to provide for two or four way working of crane |
| CN101717038B (en) * | 2009-12-14 | 2012-05-23 | 杭州国电大力机电工程有限公司 | Multiplication-variable hook device |
| CN202542724U (en) * | 2012-01-19 | 2012-11-21 | 舞阳钢铁有限责任公司 | Steel wire rope release preventing device of crane |
| CN102849645B (en) * | 2012-09-27 | 2015-04-15 | 山东丰汇设备技术有限公司 | Movable pulley and fixed pulley transferable combined type pulley block |
| CN207061702U (en) * | 2017-05-12 | 2018-03-02 | 山东电力建设第一工程公司 | A kind of flat arm tower crane lifting of ultra-large type becomes multiplying power wiring system |
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